Designed for easy installation and use on all types of marine vessels from pleasure craft to large commercial vessels. The lamp?s housing is pressure cast in aluminum and finished in a white marine grade polyester powder coating. Features cooling fins for maximum heat dissipation and durable safety glass for extreme temperature changes. A 500 watt/120v quartz halogen bulb not supplied with lamp sold separately. 5-7/8"W x 4-1/4"D x 8-7/8"H OA.